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A grammar for experimental design that learned to compose designs and track its own provenance.
Comparison · Analytics
rolap vs segregatr
A side-by-side editorial comparison of rolap and segregatr — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:r-package
rolap vs segregatr: at a glance
What is rolap?
A star-schema modelling package grew a query language, a deployment path, and then a map layer.
rolap builds dimensional models — star databases and constellations — from flat tables inside R. Over 2023 it acquired a multidimensional query interface, the ability to deploy models into relational databases, incremental refresh, and geographic layers exportable as GeoPackage. Since early 2024 it has been quiet, with the only 2025 release removing a test that clashed with another package.
What is segregatr?
A segregation-analysis tool that keeps widening which pedigrees it can actually handle.
segregatr computes full-likelihood Bayes factors for variant segregation in families, built on pedtools and part of the wider pedsuite ecosystem. Its releases are infrequent but each one lifts a structural restriction: loops, recessive and X-linked models, liability classes, and most recently a proband-free variant of the score. The companion shinyseg app gives the same machinery a clinical front end.
rolap vs segregatr: editorial side-by-side
rolap
0.0ANALYTICS
A star-schema modelling package grew a query language, a deployment path, and then a map layer.
◆ Current state
rolap builds dimensional models — star databases and constellations — from flat tables inside R. Over 2023 it acquired a multidimensional query interface, the ability to deploy models into relational databases, incremental refresh, and geographic layers exportable as GeoPackage. Since early 2024 it has been quiet, with the only 2025 release removing a test that clashed with another package.
◆ Where it's heading
The 2023 releases trace a deliberate progression from modelling to operating: first a common data model and flat table class, then role-playing dimensions, then incremental refresh, then querying and deployment, then geography, then slowly changing dimensions. That is essentially the feature checklist of a data warehouse, assembled in about six months and documented with a vignette at each step. The pace since has dropped to almost nothing, which reads as a project that reached its intended scope rather than one that stalled.
◆ Prediction
Given eighteen months in which the only release was a test removal, the next release is more likely to be maintenance than another warehouse feature — though the entries give no clear signal either way.
segregatr
0.0ANALYTICS
A segregation-analysis tool that keeps widening which pedigrees it can actually handle.
◆ Current state
segregatr computes full-likelihood Bayes factors for variant segregation in families, built on pedtools and part of the wider pedsuite ecosystem. Its releases are infrequent but each one lifts a structural restriction: loops, recessive and X-linked models, liability classes, and most recently a proband-free variant of the score. The companion shinyseg app gives the same machinery a clinical front end.
◆ Where it's heading
The through-line is coverage of awkward real-world pedigrees rather than new statistics. Loops were handled for the core score in 0.3.0 and then extended to liability classes in 0.4.0, so the same structural capability is being pushed through the codebase feature by feature. The 2025 release moves in a different direction, relaxing the requirement for a designated proband. Development is slow and steady, roughly annual, and tracks its pedtools dependency closely.
◆ Prediction
Expect the next release to continue relaxing modelling constraints — the pattern of retrofitting each new capability across loops, liability classes and inheritance models is unfinished — rather than expanding beyond segregation scoring.
Alternatives to rolap and segregatr
Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either rolap or segregatr.
secuTrialR
A Swiss clinical-trial data reader that surfaces once every couple of years to clear check notes.
flightsbr
Brazil's flight-data package keeps working around what ANAC publishes and when.
kwb.db
A water-research lab's ODBC helper, still fighting Windows database drivers a decade in.
r2dii.match
PACTA's loan-book matcher opened up to sector taxonomies other than its own.
r2dii.plot
PACTA's climate-alignment charting layer split prep from plotting, then settled into stable.
See all rolap alternatives → · See all segregatr alternatives →
Recent activity from rolap and segregatr
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 11mo agosegregatrProband-free variant of the FLB score
- 1y agorolapConflicting test temporarily removed
- 2y agosegregatrLiability classes now work in looped pedigrees
- 2y agorolapSlowly changing dimension structure added
- 2y agorolapGeographic layers and GeoPackage export
- 2y agorolaprolap 2.4.0 ⚡
- 2y agorolapIncremental refresh for star databases
- 2y agorolapFlat table class and a shared data model
- 3y agosegregatrsegregatr 0.3.0 ⚡
Frequently asked questions
What is the difference between rolap and segregatr?
Both compete on the same themes — r-package — within Analytics. rolap and segregatr are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is rolap better than segregatr?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. rolap and segregatr are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to rolap?
Top rolap alternatives in Analytics are ranked by recent ship velocity. Browse the "rolap alternatives" section above for the current picks, or visit /alternatives/rolap for the full list with editorial commentary on each.
What are the best alternatives to segregatr?
Top segregatr alternatives in Analytics are ranked by recent ship velocity. Browse the "segregatr alternatives" section above for the current picks, or visit /alternatives/segregatr for the full list with editorial commentary on each.